/*
 *  Axolotl - Alternate persistence for Grails
 *  Copyright (C) 2008  Juanjo García Latre
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
package com.googlecode.axolotl.lazy;

import java.util.AbstractList;
import java.util.List;

import com.googlecode.axolotl.Database;
import com.googlecode.axolotl.query.Query;


public class LazyEntityList extends AbstractList<Object> {

	private final Query query;
	private final Database database;
	private List ids;


	public LazyEntityList(Query query, Database database) {
		this.query = query;
		this.database = database;
	}
	
	
	@Override
	public Object get(int index) {
		return database.load(query.getType(), getIds().get(index));
	}

	
	@Override
	public int size() {
		return getIds().size();
	}

		
	protected List getIds() {
		if (ids == null) {
			ids = database.loadIds(query);
		}
		return ids;
	}
	
}
